Phase Hall-Effect Smart Motor Controller One-chip solution Built-

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Phase Hall-Effect Smart Motor Controller One-chip solution Built-

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AH2984
Phase Hall-Effect Smart Motor Controller
One-chip solution Built-in Hall sensor input amplifier Lock detection automatic self-restart Built-in reverse voltage protection diode Built-in Zener protection output driver Power efficient COMS Power MOSFET Technology Operating voltage: 2.5V~15V SIP-4L: Available "Green" Molding Compound Lead Free Finish/RoHS Compliant (Note
General Description
AH2984 one-chip solution driving two-coil brushless motors fans. contains complementary open-drain drivers motor's coil driving, automatic lock shutdown restart function relatively. Specially designed driving large fans, device optimized start-up voltage. Based advanced CMOS process, contains Hall-effect sensor, dynamic offset correction powerful output drivers with 800mA peak output current capability. avoid coil burning, rotor-lock shutdown detection circuit shut down output driver rotor blocked then automatic recovery circuit will restart motor. This function repeats while rotor blocked. Until blocking removed, motor recovers running normally.
Ordering Information
AH2984
Package SIP-4L
Device AH2984-PG-B
Notes:
Green Green
Packaging (Note SIP-4L
Packing Bulk
Quantity 1000 Bulk Part Number Suffix
Package Code
Directive 2002/95/EC (RoHS). applicable RoHS exemptions applied, Directive 2002/95/EC Annex Notes. layout shown Diodes Inc. suggested layout document AP02001, which found website
Assignment
View 2984
SIP-4L
AH2984 Rev.
www.diodes.com
DECEMBER 2008
Diodes Incorporated
AH2984
Phase Hall-Effect Smart Motor Controller
Description
Name
Description Input power Output Output Ground
Block Diagram
Lock shutdown Automatic recovery Regulator
Hall Plate
Amp.
Control Logic
AH2984 Rev.
www.diodes.com
DECEMBER 2008
Diodes Incorporated
AH2984
Phase Hall-Effect Smart Motor Controller
Typical Application Circuit
(Note
2984
brush-less
Notes: (Zenor Diode) Capacitor power stabilization, which recommended 1uF/ (E-Cap.). diode protects chip coils reverse power condition.
Absolute Maximum Ratings
Symbol Vrdd IO(AVE) IO(peak hold)
25°C)
Conditions Supply Voltage Reverse Polarity Voltage Output Current (Note Power Dissipation Storage Temperature Maximum Junction Temperature Thermal Resistance (Note SIP-4L
Rating
Unit °C/W
SIP-4L
Recommended Operating Conditions
Symbol
Notes:
Parameter Supply Voltage Operating Ambient Temperature (Note
Conditions Operating Operating
Unit
Shall exceed Safety Operation Area. heatsink, flow
AH2984 Rev.
www.diodes.com
DECEMBER 2008
Diodes Incorporated
AH2984
Phase Hall-Effect Smart Motor Controller
Electrical Characteristics
Symbol Toff Rduty Rds(on)
Notes:
=12V, unless otherwise specified)
Characteristics Supply Current Locked Protection Time Locked Protection Time Locked Protection Duty Ratio Output Resistance Output Zener-Breakdown Voltage (Note
Conditions Operating, Vdd=12V
Toff/Ton 300mA 500mA
Typ. 0.25 3.25 1.25
1.67
Unit
value voltage measurement. vary with coils A.C. voltage measurement.
Magnetic Characteristics
2.5V~15V)
Symbol
Characteristics Operate Point Release Point Hysteresis
Typ.
(1mT=10 Gauss) Unit Gauss Gauss Gauss
AH2984 Rev.
www.diodes.com
DECEMBER 2008
Diodes Incorporated
AH2984
Phase Hall-Effect Smart Motor Controller
Operating Characteristics
Output Voltage Volts
Output Voltage Volts
Vsat
Vsat
Magnetic Flux Density Gauss
Magnetic Flux Density Gauss
Marking side
SIP-4L
AH2984 Rev.
www.diodes.com
DECEMBER 2008
Diodes Incorporated
AH2984
Phase Hall-Effect Smart Motor Controller
Performance Characteristics
TA(°C) PD(mW) TA(°C) PD(mW)
sipa tion Curv
Marking Information
SIP-4L
View Part Number
2984
Year Week 01~52, "52" represents week Internal Code Green
SIP-4L
AH2984 Rev.
www.diodes.com
DECEMBER 2008
Diodes Incorporated
AH2984
Phase Hall-Effect Smart Motor Controller
Package Information
Package type: SIP-4L
Marking side
1.10.1mm
1.950.1mm
Active Area Depth
Package Dimension
Sensor Location
AH2984 Rev.
www.diodes.com
DECEMBER 2008
Diodes Incorporated
AH2984
Phase Hall-Effect Smart Motor Controller
IMPORTANT NOTICE Diodes Incorporated subsidiaries reserve right make modifications, enhancements, improvements, corrections other changes without further notice product herein. Diodes Incorporated does assume liability arising application product described herein; neither does convey license under patent rights, rights others. user products such applications shall assume risks such will agree hold Diodes Incorporated companies whose products represented website, harmless against damages. LIFE SUPPORT Diodes Incorporated products authorized critical components life support devices systems without expressed written approval President Diodes Incorporated.
AH2984 Rev.
www.diodes.com
DECEMBER 2008
Diodes Incorporated

Phase Hall-Effect Smart Motor Controller One-chip solution Built-

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